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Question

A circular disc is rotating about its own axis. Two particles P and Q of the disc are at distances 4 cm, 6 cm from the axis of rotation. The ratio of centripetal accelerations of P and Q will be:

A
2:3
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B
4:9
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C
3:2
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D
9:4
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Solution

The correct option is A 2:3
ω is same for both P and Q.

Fc,pFc,q=mw2RPmw2RQ=46=23

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